Web Forms :: Global Method That Can Be Accessed Anywhere In Whole Project?

how to make a method as global method so that i can call it anywhere in application without referring  any class

namespace SomeNamespace
{
public static class SomeClass
{
public static string SomeMethod()
{
...
}
}
}

used methods:

1.string x = SomeNamespace.SomeClass.SomeMethod();

2.using SomeNamespace;
string x = SomeClass.SomeMethod();

What i Need is :

somemethod();